wuzhen update2

backend/sql/database_fix_teacher_name_field.sql

@@ -0,0 +1,75 @@
+-- ================================================================
+-- 贫困生认定申请表teacher_name字段修复脚本
+-- 文件: database_fix_teacher_name_field.sql
+-- 功能: 添加缺失的teacher_name字段
+-- ================================================================
+
+USE hzdyjs_xg;
+
+-- 1. 检查并添加 teacher_name 字段
+SELECT '开始检查 teacher_name 字段...' AS message;
+
+-- 检查字段是否存在
+SELECT
+    COLUMN_NAME,
+    IS_NULLABLE,
+    COLUMN_DEFAULT,
+    DATA_TYPE
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE TABLE_SCHEMA = 'hzdyjs_xg'
+  AND TABLE_NAME = 'jcbt_poverty_application'
+  AND COLUMN_NAME = 'teacher_name';
+
+-- 添加 teacher_name 字段（如果不存在）
+SET @sql = '';
+SELECT COUNT(*) INTO @count
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE TABLE_SCHEMA = 'hzdyjs_xg'
+  AND TABLE_NAME = 'jcbt_poverty_application'
+  AND COLUMN_NAME = 'teacher_name';
+
+SELECT IF(@count = 0,
+    'ALTER TABLE jcbt_poverty_application ADD COLUMN teacher_name varchar(100) NULL COMMENT ''班主任教师姓名'' AFTER teacher_id;',
+    'SELECT ''teacher_name 字段已存在'' AS result;'
+) INTO @sql;
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+SELECT '✅ teacher_name 字段检查完成' AS message;
+
+-- 2. 验证修复结果
+SELECT '=== 修复结果验证 ===' AS message;
+
+-- 显示teacher相关字段信息
+SELECT
+    COLUMN_NAME AS '字段名',
+    DATA_TYPE AS '数据类型',
+    IS_NULLABLE AS '允许NULL',
+    COLUMN_DEFAULT AS '默认值',
+    COLUMN_COMMENT AS '注释'
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE TABLE_SCHEMA = 'hzdyjs_xg'
+  AND TABLE_NAME = 'jcbt_poverty_application'
+  AND COLUMN_NAME LIKE '%teacher%'
+ORDER BY ORDINAL_POSITION;
+
+-- 3. 显示完整表结构确认
+SELECT '=== 班级相关字段确认 ===' AS message;
+
+SELECT
+    COLUMN_NAME AS '字段名',
+    DATA_TYPE AS '数据类型',
+    IS_NULLABLE AS '允许NULL',
+    COLUMN_COMMENT AS '注释'
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE TABLE_SCHEMA = 'hzdyjs_xg'
+  AND TABLE_NAME = 'jcbt_poverty_application'
+  AND COLUMN_NAME IN (
+    'class_id', 'class_name', 'teacher_id', 'teacher_name'
+  )
+ORDER BY ORDINAL_POSITION;
+
+SELECT '🎉 teacher_name字段修复操作完成！' AS message;
+SELECT '📝 请重启后端服务以生效！' AS note;